i8o MEMOIRS ON THE COLEOPTERA 



circumstances, that the interchange has not been more extensive; 

 I do not know of a single species of European Lanorus, Telopes or 

 Globicornis that has found its way to this country. Our very 

 numerous Trogoderma and Cryptorhopalum species do not seem to 

 include any demonstrable foreign elements, and there are many 

 purely endemic species in Dermestes, Attagenus and Anthrenus, 

 which do not seem to have spread to other parts of the world. The 

 family is one of the more sharply circumscribed of the Clavicornia, 

 and there are many species and subspecies in some parts of the 

 series rather closely allied among -themselves that are still to be 

 differentiated and described. 



Dermestes Linn. 



In my former review of this genus (J.N. Y. Ent. Soc., 1900, p. 140), 

 I inadvertently overlooked the species described by Mr. Fall, from 

 Sta. Rosa Island, off the coast of California, under the name tristis. 

 Subsequently Mr. Fall intimated that my medialis was probably a 

 synonym of tristis, and so it appeared until more careful comparison 

 was made between the two, as they are both small, with the upper 

 surface black, inconspicuously pubescent and strongly and closely 

 punctate; but the author does not mention the three points of white 

 hairs in transverse line on the pronotum in describing tristis. 

 However, the matter is completely settled on examining the under 

 surface, which, in tristis, is said to be "clothed as usual with dense 

 white pubescence, with lateral series of black spots." In medialis 

 the under surface has the usual dense white pubescence only on the 

 post-sterna and parapleura; the abdomen is loosely clothed with 

 coarse whitish, mingled with a few fulvous, hairs, only slightly 

 condensed medially toward base; the posterior fringes are of dark 

 brown hairs, becoming white in a small tuft near each side; the 

 punctures are strong but well separated and show clearly through 

 the comparatively sparse vestiture. The under surface of the 

 anterior and middle male tarsi is finely but not densely pubescent, 

 with a few short spinules laterally. 



The following is allied to vulpinus but is apparently distinct: 



Dermestes truncatus n. sp. Form oblong, only feebly convex above, 

 piceous-black; head slightly less than half as wide as the prothorax, 

 strongly, closely cribrate and with moderately close, even, whitish hairs; 

 antennae nearly as in vulpinus; prothorax two-fifths wider than long, the 



